#ifndef LWIP_CUSTOM_LWIPOPTS_H
#define LWIP_CUSTOM_LWIPOPTS_H

// fix icmp6_hdr & ip6_hdr con
#define icmp6_hdr lwip_icmp6_hdr
#define ip6_hdr lwip_ip6_hdr
//#define in6_addr lwip_in6_addr
//#define in4_addr lwip_in4_addr

//  NO SYS
#define NO_SYS                     1
#define LWIP_SOCKET                (NO_SYS==0)
#define LWIP_NETCONN               (NO_SYS==0)
#define LWIP_NETIF_API             (NO_SYS==0)

#define LWIP_TIMERS             1

//  IPv4 & IPv6 options
#define LWIP_IPV4                  1
#define LWIP_IPV6                  1

//  Memory options
#define MEM_LIBC_MALLOC         1
//#define MEMP_MEM_MALLOC         1
/*
 https://developer.apple.com/library/content/documentation/Performance/Conceptual/ManagingMemory/Articles/MemoryAlloc.html
 */

//  IP options
#define IP_FRAG                 0

//  ARP options
#define LWIP_ARP                0

//  ICMP options
#define LWIP_ICMP               0

// TCP options
#define LWIP_TCP                1

//  UDP options
#define LWIP_UDP                1

//  DNS options
#define LWIP_DNS                1


/*
   ------------------------------------
   ---------- LOOPIF options ----------
   ------------------------------------
*/
/**
 * LWIP_HAVE_LOOPIF==1: Support loop interface (127.0.0.1) and loopif.c
 */
#define LWIP_HAVE_LOOPIF                0

#define LWIP_NETIF_LOOPBACK        0
#define LWIP_LOOPBACK_MAX_PBUFS    10

#define TCP_LISTEN_BACKLOG         1

#define LWIP_COMPAT_SOCKETS        1
#define LWIP_SO_RCVTIMEO           1
#define LWIP_SO_RCVBUF             1

#define LWIP_NETIF_LINK_CALLBACK        1
#define LWIP_NETIF_STATUS_CALLBACK      1
#define LWIP_NETIF_EXT_STATUS_CALLBACK  1

/* ---------- TCP options ---------- */
#define TCP_TTL                 255
#define LWIP_ALTCP              (LWIP_TCP)
//#ifdef LWIP_HAVE_MBEDTLS
//#define LWIP_ALTCP_TLS          (LWIP_TCP)
//#define LWIP_ALTCP_TLS_MBEDTLS  (LWIP_TCP)
//#endif


#define NP_TCP_MAX_RETRIES      4
//#define LWIP_HAVE_MBEDTLS 1
//#ifndef LWIP_MBEDTLSDIR
//#define LWIP_MBEDTLSDIR "../../mbedtls/"
//#endif
//#define MBEDTLSDIR LWIP_MBEDTLSDIR

//#define LWIP_ALTCP              (LWIP_TCP)
//#ifdef LWIP_HAVE_MBEDTLS
//#define LWIP_ALTCP_TLS          (LWIP_TCP)
//#define LWIP_ALTCP_TLS_MBEDTLS  (LWIP_TCP)
//#endif

/*
 * `65535`: the maximum IP packet size
 * `60`: max IP header length
 * `60`: max TCP header length
 */
#define TCP_WND                 65535
#define TCP_MSS                 (1460 * 10)
//#define TCP_MSS                 (TCP_WND / 8)
// #define TCP_SND_BUF             (TCP_WND)
#define LWIP_EVENT_API          0
#define LWIP_CALLBACK_API       1

/* Controls if TCP should queue segments that arrive out of
   order. Define to 0 if your device is low on memory. */
#define TCP_QUEUE_OOSEQ         1

/* TCP Maximum segment size. */
//#define TCP_MSS                 4096

/* TCP sender buffer space (bytes). */
//#define TCP_SND_BUF            (16 * TCP_MSS)
#define TCP_SND_BUF             (4*TCP_MSS)

/* TCP sender buffer space (pbufs). This must be at least = 2 *
   TCP_SND_BUF/TCP_MSS for things to work. */
#define TCP_SND_QUEUELEN       (3200 * TCP_SND_BUF/TCP_MSS)

/* TCP writable space (bytes). This must be less than or equal
   to TCP_SND_BUF. It is the amount of space which must be
   available in the tcp snd_buf for select to return writable */
#define TCP_SNDLOWAT           (TCP_SND_BUF/16)

/* Maximum number of retransmissions of data segments. */
#define TCP_MAXRTX              12

/* Maximum number of retransmissions of SYN segments. */
#define TCP_SYNMAXRTX           4

/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
//#define PBUF_POOL_BUFSIZE       256

#define LWIP_TCP_KEEPALIVE      1

// 劫持
//#define LWIP_HOOK_FILENAME "lwip_mitm_hooks.h"

//  Statistics options
#define LWIP_STATS              0

//  PPP options
#define PPP_SUPPORT             0

//  Other
#define LWIP_DONT_PROVIDE_BYTEORDER_FUNCTIONS

//  Debug
#define LWIP_DEBUG              LWIP_DBG_ON

//#ifdef LWIP_DEBUG
#define LWIP_DBG_MIN_LEVEL         0
#define PPP_DEBUG                  LWIP_DBG_OFF
#define MEM_DEBUG                  LWIP_DBG_OFF
#define MEMP_DEBUG                 LWIP_DBG_OFF
#define PBUF_DEBUG                 LWIP_DBG_OFF
#define API_LIB_DEBUG              LWIP_DBG_OFF
#define API_MSG_DEBUG              LWIP_DBG_OFF
#define TCPIP_DEBUG                LWIP_DBG_OFF
#define NETIF_DEBUG                LWIP_DBG_OFF
#define SOCKETS_DEBUG              LWIP_DBG_OFF
#define DNS_DEBUG                  LWIP_DBG_OFF
#define AUTOIP_DEBUG               LWIP_DBG_OFF
#define DHCP_DEBUG                 LWIP_DBG_OFF
#define IP_DEBUG                   LWIP_DBG_OFF
#define IP_REASS_DEBUG             LWIP_DBG_OFF
#define ICMP_DEBUG                 LWIP_DBG_OFF
#define IGMP_DEBUG                 LWIP_DBG_OFF
#define UDP_DEBUG                  LWIP_DBG_OFF
#define TCP_DEBUG                  LWIP_DBG_OFF
#define TCP_INPUT_DEBUG            LWIP_DBG_OFF
#define TCP_OUTPUT_DEBUG           LWIP_DBG_OFF
#define TCP_RTO_DEBUG              LWIP_DBG_OFF
#define TCP_CWND_DEBUG             LWIP_DBG_OFF
#define TCP_WND_DEBUG              LWIP_DBG_OFF
#define TCP_FR_DEBUG               LWIP_DBG_OFF
#define TCP_QLEN_DEBUG             LWIP_DBG_OFF
#define TCP_RST_DEBUG              LWIP_DBG_OFF
#define NP_TCP_DEBUG               LWIP_DBG_ON
//#endif

#define LWIP_DBG_TYPES_ON         (LWIP_DBG_ON|LWIP_DBG_TRACE|LWIP_DBG_STATE|LWIP_DBG_FRESH|LWIP_DBG_HALT)

/* ---------- Memory options ---------- */
/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which
   lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2
   byte alignment -> define MEM_ALIGNMENT to 2. */
/* MSVC port: intel processors don't need 4-byte alignment,
   but are faster that way! */
#define MEM_ALIGNMENT           4U

/* MEM_SIZE: the size of the heap memory. If the application will send
a lot of data that needs to be copied, this should be set high. */
#define MEM_SIZE               1024000

/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application
   sends a lot of data out of ROM (or other static memory), this
   should be set high. */
#define MEMP_NUM_PBUF           16
/* MEMP_NUM_RAW_PCB: the number of UDP protocol control blocks. One
   per active RAW "connection". */
#define MEMP_NUM_RAW_PCB        3
/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
   per active UDP "connection". */
#define MEMP_NUM_UDP_PCB        8
/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
   connections. */
#define MEMP_NUM_TCP_PCB        1024
/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
   connections. */
#define MEMP_NUM_TCP_PCB_LISTEN 8
/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
   segments. */
//#define MEMP_NUM_TCP_SEG        1024
#define MEMP_NUM_TCP_SEG        TCP_SND_QUEUELEN
/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
   timeouts. */
#define MEMP_NUM_SYS_TIMEOUT    17

/* The following four are used only with the sequential API and can be
   set to 0 if the application only will use the raw API. */
/* MEMP_NUM_NETBUF: the number of struct netbufs. */
#define MEMP_NUM_NETBUF         2
/* MEMP_NUM_NETCONN: the number of struct netconns. */
#define MEMP_NUM_NETCONN        12
/* MEMP_NUM_TCPIP_MSG_*: the number of struct tcpip_msg, which is used
   for sequential API communication and incoming packets. Used in
   src/api/tcpip.c. */
#define MEMP_NUM_TCPIP_MSG_API   16
#define MEMP_NUM_TCPIP_MSG_INPKT 16


/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
#define PBUF_POOL_SIZE          120

/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#define PBUF_POOL_BUFSIZE       2048

/** SYS_LIGHTWEIGHT_PROT
 * define SYS_LIGHTWEIGHT_PROT in lwipopts.h if you want inter-task protection
 * for certain critical regions during buffer allocation, deallocation and memory
 * allocation and deallocation.
 */
#define SYS_LIGHTWEIGHT_PROT    (NO_SYS==0)

#define LWIP_DEBUG_TIMERNAMES 0

/*
   ---------------------------------
   ---------- ARP options ----------
   ---------------------------------
*/
/**
 * LWIP_ARP==1: Enable ARP functionality.
 */
#define LWIP_ARP                        0

/*
   --------------------------------
   ---------- IP options ----------
   --------------------------------
*/
/**
 * IP_FORWARD==1: Enables the ability to forward IP packets across network
 * interfaces. If you are going to run lwIP on a device with only one network
 * interface, define this to 0.
 */
#define IP_FORWARD                      0

/**
 * LWIP_CHECKSUM_ON_COPY==1: Calculate checksum when copying data from
 * application buffers to pbufs.
 */
#define LWIP_CHECKSUM_ON_COPY           1

/**
 * SO_REUSE==1: Enable SO_REUSEADDR
 */
#define SO_REUSE                        1

/*
   ---------------------------------------
   ---------- Threading options ----------
   ---------------------------------------
*/

#define LWIP_TCPIP_CORE_LOCKING    1
#define NP_CUSTOM_TCPIP_CORE_LOCKING      1

#if NP_CUSTOM_TCPIP_CORE_LOCKING
#if LWIP_TCPIP_CORE_LOCKING
void sys_lock_tcpip_core(void);
#define LOCK_TCPIP_CORE()          sys_lock_tcpip_core()
void sys_unlock_tcpip_core(void);
#define UNLOCK_TCPIP_CORE()        sys_unlock_tcpip_core()
#endif
#endif

#endif /* LWIP_CUSTOM_LWIPOPTS_H */
